American television writer who served as story consultant on the third season of the original Star Trek and wrote the teleplay of its final episode, Turnabout Intruder.
Arthur H. Singer was a television writer with experience in live drama who joined the original Star Trek for its third season as story consultant, working under the producer Fred Freiberger after D. C. Fontana had left the staff.
In that post he oversaw the scripts of the final year and carried out rewrites on a number of them. His one writing credit is the teleplay of Turnabout Intruder, from a story by Gene Roddenberry, in which Dr Janice Lester uses an alien device on Camus II to exchange bodies with Kirk and take command of the Enterprise, until Spock's mind meld and her own erratic behaviour expose her.
It was the last episode of the original series to be filmed and shown.